With the upward spiral of syndicated content in mind, I can’t understand bloggers / news platforms who only publish a small abstract from their blogpost into their feed.
The whole syndication story gets absurd when you only put the first 3 sentences of your blogpost into the feed. I understand you like people to see your nice site design and your google ads, but I believe the value of your content goes down if you only publish an abstract. Look at feedburner or other services and put the ads in your feed.
Ok, half-bred feeds still notify me when you have posted something new, but what if you wrote something really cool that I want to save in my feed reader: impossible. The reason for you to provide a feed has to be the user. You want to make your content as available as possible for anyone, don’t degrade your feed to a promotion tool for your site. It’s much more than that. For your readers your feed is probably the most important part of your site.
Users who like your design, will still choose to go to your site to read your content, but let the user decide how to interact with your content.